# 随堂实操——画瞄准镜
import turtle

turtle.ht()
turtle.pensize(3)

turtle.circle(100)
turtle.goto(0, 200)
turtle.goto(0, 100)
turtle.goto(-100, 100)
turtle.goto(100, 100)
turtle.goto(50, 100)
turtle.goto(50, 110)
turtle.goto(50, 90)
turtle.goto(50, 100)
turtle.goto(-50, 100)
turtle.goto(-50, 110)
turtle.goto(-50, 90)
turtle.goto(-50, 100)
turtle.goto(0, 100)
turtle.goto(0, 150)
turtle.goto(10, 150)
turtle.goto(-10, 150)
turtle.goto(0, 150)
turtle.goto(0, 50)
turtle.goto(10, 50)
turtle.goto(-10, 50)

turtle.done()
